关键字：HttpWebRequest,

SSL,X509Certificate

 dotNet  Framwork 1.1

 
编写时间：2005-3-29

 WSE 2.0 SP3

目的：

对于用HttpWebRequest加载证书请求远端https服务器时，发生的

“基础连接已经关闭: 无法与远程服务器建立信任关系。”/

“The underlying connection was closed. Could not establish a secure SSL/TLS connection”错误，我们可以用如下方式解决。

重现：

使用以下代码，你就可以得到这个错误“基础连接已经关闭: 无法与远程服务器建立信任关系”：

using System;

using System.Text;

using System.Net;

using System.IO;

using System.Security.Cryptography.X509Certificates;

using Microsoft.Web.Services2.Security;

using Microsoft.Web.Services2.Security.Tokens;

using Microsoft.Web.Services2.Security.X509;

static void Main(string[] args)

        {

            StringBuilder sb=new StringBuilder();

            string _strToRequest = "send";

            try

            {

                //POST请求开始

                byte[] bt=Encoding.Default.GetBytes("send");

                HttpWebRequest Req=(HttpWebRequest)System.Net.WebRequest.Create("https://202.108.CCC.XXX:Port//");

                Req.KeepAlive=true;

                //Req.Timeout=60000;

                Req.ContentType="text/xml";

                Req.ContentLength=_strToRequest.Length;

                Req.Method="POST";

                X509CertificateStore store = X509CertificateStore.CurrentUserStore( X509CertificateStore.MyStore );

                store.OpenRead();

                //读取证书的keyid

                Microsoft.Web.Services2.Security.X509.X509CertificateCollection certs =

                    store.FindCertificateByKeyIdentifier( Convert.FromBase64String( "CXv+xZ78zI3qWHGJ6Wh9BF6B23A=" ) );

                X509SecurityToken token = null;

                if (certs.Count > 0)

                {

                    // 得到证书存储区的第1个人证书

                    token = new X509SecurityToken( ((Microsoft.Web.Services2.Security.X509.X509Certificate) certs[0]) );